//设置cookie
export function setCookie(c_name, value, expiredays){
  var exdate = new Date();　　　　
  exdate.setDate(exdate.getDate() + expiredays);　　　　
  document.cookie = c_name + "=" + escape(value) + ((expiredays == null) ? "" : ";expires=" + exdate.toGMTString());
}

//获取cookie、
export function getCookie(name) {
  var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");
  if (arr = document.cookie.match(reg))
    return (arr[2]);
  else
    return null;
}

//删除cookie
export function delCookie(name){
    var exp = new Date();
    exp.setTime(exp.getTime() - 1);
    var cval = getCookie(name);
    if (cval != null)
      document.cookie = name + "=" + cval + ";expires=" + exp.toGMTString();
}
